Medical technology group Siemens Healthineers has said it plans to buy the US oncology specialist Varian for $16.4 billion. The German firm says it aims to create a leading force in the fight against cancer.

Medical technology group Siemens Healthineers has said it plans to buy the US oncology specialist Varian for $16.4 billion. The German firm says it aims to create a leading force in the fight against cancer.
